Home / 120,394.08-166,091.40-72,620.88

Finding the Fourth Proportional to 120,394.08, 166,091.40 and 72,620.88

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Solution

The fourth proportional to 120,394.08, 166,091.40 and 72,620.88 is: 100,185.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,394.08 : 166,091.40 = 72,620.88 : x
  2. Step 2: Convert to fraction form
    120,394.08/166,091.40 = 72,620.88/x
  3. Step 3: Cross multiply
    120,394.08x = 166,091.40 × 72,620.88
  4. Step 4: Simplify right side
    120,394.08x = 12,061,703,628.43
  5. Step 5: Solve for x
    x = 12,061,703,628.43/120,394.08
  6. Step 6: Final answer
    x = 100,185.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.